20002201201221 has 8 divisors (see below), whose sum is σ = 26669840355840. Its totient is φ = 13334681423712.

The previous prime is 20002201201189. The next prime is 20002201201223. The reversal of 20002201201221 is 12210210220002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20002201201221 - 2⁵ = 20002201201189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002201201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002201201223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29452581 + ... + 30124058.

It is an arithmetic number, because the mean of its divisors is an integer number (3333730044480).

Almost surely, 2^{20002201201221} is an apocalyptic number.

It is an amenable number.

20002201201221 is a deficient number, since it is larger than the sum of its proper divisors (6667639154619).

20002201201221 is a wasteful number, since it uses less digits than its factorization.

20002201201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59688555.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20002201201221 its reverse (12210210220002), we get a palindrome (32212411421223).

The spelling of 20002201201221 in words is "twenty trillion, two billion, two hundred one million, two hundred one thousand, two hundred twenty-one".